Calories in Navel Orange. *Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs. Some of these foods were entered by users and are subject to error.
Myelination, the process by which glial cells ensheath the axons of neurons in layers of myelin, ensures the rapid conduction of electrical impulses in the nervous system. The formation of myelin sheaths is one of the most spectacular examples of cell-cell interaction and coordination in nature.
Conduction of the action potential. In a myelinated axon (top), the myelin sheath prevents the local current (small black arrows) from flowing across the membrane.This forces the current to travel down the nerve fiber to the unmyelinated nodes of Ranvier, which have a high concentration of ion channels.earch Tips. View full-size image Conduction of the action potential In a myelinated axon (top), the myelin sheath prevents the local current (small black arrows) from flowing across the membrane.